<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // var xhr = new XMLHttpRequest();
        // xhr.open("get", "../day4/1.php", true);
        // xhr.send();
        // xhr.onreadystatechange = function () {
        //     if (xhr.readyState == 4 && xhr.status == 200) {
        //         var str = JSON.parse(xhr.responseText);
        //         console.log(str)
        //     }
        // }


    </script>
</body>

</html>